KNSU2.5-28 is a plastic spur gear with a steel core, module 2.5, 28 teeth, and a 40 mm bore diameter. It features a 70 mm pitch diameter, 75 mm outside diameter, 25 mm face width, and 40 mm hub width, with a total length of 40 mm. The gear is made of MC602ST nylon with an S45C steel core, adheres to JIS grade N9 precision (JIS B1702-1:1998), and has a 20° pressure angle. The allowable torque is 17.7 N·m (1.80 kgf·m), and the backlash is 0~0.46 mm. The steel core is fused to the nylon via diamond knurling and grooving for high holding strength, providing dimensional stability across temperature variations.
Module 2.5, 28 Tooth Nylon Steel Core Spur Gear with Finished 17mm Bore
Our plastic spur gears are available in a variety of materials, including:
With a variety of fastening styles, including:
You May Also Need:
Shafts
Bearings
Couplings
For custom components or modifications to a standard part, call us or submit an RFQ.
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Design of Plastic Gears and General Considerations of Plastic Gearing
How to Achieve Optimum Performance in a Miniature Gear Train
| QTC METRIC GEARS | Stock Drive Products & Sterling Instrument - SDP/SI | |
|---|---|---|
| Product Category | Gears | Gears |
| Product Number | KNSU2.5-28J17 | KNSU2.5-28J17 |
| Product Name | Plastic Spur Gears (metric) | Module 2.5, 28 Tooth Nylon Steel Core Spur Gear with Finished 17mm Bore |
| Gear Type | Spur | Spur; Rack |
| Number of Teeth | 28 | 28 |
| Design | Metric | Metric |
| Pressure Angle | 20° | 20° |
| Material | Nylon | Nylon; Nylon / Steel Core |
